---
title: "CVE-2011-1764\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2011-1764?format=md
keywords: index, follow
---

# CVE-2011-1764

Publication date 10 May 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

Format string vulnerability in the dkim\_exim\_verify\_finish function in
src/dkim.c in Exim before 4.76 might allow remote attackers to execute
arbitrary code or cause a denial of service (daemon crash) via format
string specifiers in data used in DKIM logging, as demonstrated by an
identity field containing a % (percent) character.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| exim4 | 11.04 natty | Fixed 4.74-1ubuntu1.1 |
| 10.10 maverick | Fixed 4.72-1ubuntu1.2 |
| 10.04 LTS lucid | Fixed 4.71-3ubuntu1.2 |
| 8.04 LTS hardy | Not affected |
| 6.06 LTS dapper | Not affected |

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* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1764)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-1764)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-1764)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-1764)

### Related Ubuntu Security Notices (USN)

+ [USN-1130-1](https://usn.ubuntu.com/USN-1130-1)
+ Exim vulnerability
+ 10 May 2011

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-1764>